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Old 03-16-2017, 01:18 PM   #1
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Issue with O2 - Datalog

Hey guys, Ive been having an issue with my truck for a while. It seems to be like an O2 sensor problem. Ive tried to troubleshoot a few things by myself, but came to the decision of turning to the forums for some help and opinions.

I had intermitent O2 sensor codes for the past 2 years on my truck. Sometime i could have no codes for 2-3 months, then could get codes 2-3 times in a week. At some point, truck decided to run rough without any power, was definately an O2 sensor going bad...changed it and problem solved. Codes started to show up few weeks after, for the same sensor. Erased the code, and didnt came back for a while. (This said, even with faulty O2 sensor replacement, my original intermitent problem is still occuring). Checked 02 connectors/wires..all good. According to some posts, could of been an ECU problem...got it factory reflashed/updated and problem still persist. I switched O2 sensors of sides to determine if the one i replaced was faulty (codes would of been thrown on different bank). And suprise...it did throw a code on the other side. I then came to the conclusion that it was a faulty sensor. Shortly after, codes showed up for both sides. Now im just unsure of whats really going on. My problem might be somewhere else, causing O2 codes ?

So briefly, here are the codes i have been getting.
- P0132 O2 Circuit High Voltage (B1, S1) Multiple times (Before and after replacing faulty sensor)
- P0152 O2 Circuit High Voltage (B2, S1) After changing newly replaced O2 to passenger side
- P0151 O2 Circuit Low Voltage (B2, S1)
Recently, showed up 3 codes at once. P0152, P0132, P0151
Two days later, shows up 2 codes. P0152, P0132
Yesterday, received code P0151

Truck runs rough at some times. Very very hard on gas, always been since i bought the truck. 20$ for 66Kms @80km/h, normal driving...that makes it approx 9mpg.
So here it is, I have a Diablosport Trinity..i plan on doing a datalog and wondering if someone could have a look at it and see whats really going on inside. Ive never datalogged before but i do have a good idea of how to (using Live Streaming). So what gauge layout should I use and add so that it logs all information required for my diagnostic ? What would be the perfect scenario for this datalog type (Log on idle, while driving, normal driving, WOT, cold or warm) ? Currently tuned with Diablosport MPG canned tune. Should I revert it to stock before logging ?

Thank you all in advance

2005 Dodge RAM 1500 4x4 QC 5.7l Hemi

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Old 03-16-2017, 01:20 PM   #2
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Someone should be along soon to address your question.


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Old 03-16-2017, 02:58 PM   #3
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Welcome to the forum. I'll touch on a couple things. What size tires are running? Do you have cats installed? Agreed, your mpg is poor... o2s codes for high voltage usually indicate burned out heaters or problem with the electrical plug. Are you burning oil? Since the one bank seems to be reoccurring, perhaps that bank has an oil issue? What do the spark plugs look like? Any pictures of the plugs?
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Old 03-16-2017, 10:20 PM   #4
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I am currently running on 35x12.5x20 OpenCountry, stock 3.55 ratio. I know it may sound like big tires for the ratio, but I havent seen any difference in fuel milleage with stock tires on 17".

Stock cats installed with stock exhaust all the way. Only bolt on mod is K&N air intake.
It does burn oil, i barely keep track of that but i'd take a guess and say 1/2 - 1 quart per oil change.
I did found out a major "sludge" problem, cause by the blow-by gases that condensates into the air intake pipe. Cleaned it all out up to the TB, then used seafoam. Unplugged the hose going to the intake pipe, and dumped it into a bottle to prevent sludge buildup while i get an oil catch can.
I havent checked the plugs, im going to pull a few off on each side and take pictures.

I do have a pair of PaceSetter LT headers to install, along with 3" Y-Pipe, catless. Currently shopping for a cat-back exhaust to finalise the kit. When doing that, i was already thinking of throwing 4 new Mopar O2's..just to have the peace of mind that everything would run smoothly, while getting rid of my O2 codes as well.
But right now i think there might be other issues beside O2 sensor itself. Probably spark plugs, i never changed or checked them...cant wait to have a look.

Thanks for helping
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Old 03-16-2017, 10:39 PM   #5
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1qt per oil change (3000miles) is acceptable I believe. You might consider checking/replacing the pcv valve. There's a write up i believe on the forum explaining cleaning the tb. But basically it is remove the tb and use non-cholonated brake cleaner on a rag or brush and clean in front and behind the butterfly. It would be helpful to remove all the spark plugs keeping track which hole they came out of and post pictures to see what you have. Good luck
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Old 03-16-2017, 10:58 PM   #6
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I am a CMR tuner and would be glad to look at a log for you to see if there is an issue we can resolve.

The 02 issue is for sure weird. As you have moved sensors and what not and it followed it let's us know the sensors are deff getting messed up by why so fast. If you take the canned tune off and go back to stock does it still throw the codes for the sensors?
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Old 03-17-2017, 12:24 PM   #7
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Did you use MOPAR O2 sensors when you replaced? Some of our trucks don't like non-OEM O2 sensors.
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Old 03-20-2017, 12:52 PM   #8
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Quote:
Originally Posted by CavRam View Post
Did you use MOPAR O2 sensors when you replaced? Some of our trucks don't like non-OEM O2 sensors.
This ! You can get oem sensors from Rockauto far cheaper than at the dealer. Make sure you buy the NTK branded ones, as these are the oem sensors
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Old 03-20-2017, 10:01 PM   #9
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I did check the PCV valve when i used seafoam about a month ago. There was alot of sludge on it so i cleaned it and made sure the "thing" inside was moving freely. I took it off yesterday and it was sludged up a bit again ("thing" inside seemed to be moving freely though). I Think i might pour a little bit of seafoam in there to help. I will also take the time to remove the TB and clean it all good.

I really cant remember which brand of O2 i've put in when i replaced it, but for sure it wasent Mopar or NTK. I will definately have a look at replacing all O2 sensor to some NTK's.

Codes does show up without any canned tunes installed. I did took a Datalog today, first time ever datalogging. Took the 05_06 dashboard and threw a few PIDS related to O2 with it. I'm not real sure what i really have to monitor to gather the information needed, so anyone having a look at it can tell me what i should add/remove from the dashboard. Startup, idle, and a short drive including WOT. Logging was made while having MPG canned tune installed.

https://www.dropbox.com/s/g9kgmtk8lb...stLog.log?dl=0
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Old 03-20-2017, 10:34 PM   #10
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I also took out the sparkplugs. Something just looks weird..on each set (2) of plugs, one of the tip is completely worn out. At first look i thought maybe they were different kind of plugs, but they are all the same (Champion 7570).
Far right end = Front
Driver side
IMG_3120.jpg
IMG_3110.jpg

Passenger side
IMG_3128.jpg
IMG_3122.jpg
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